# coding=utf-8

import requests
from lxml import etree
import random
import codecs
import copy
import json
import logging

def rand_header():
    head_connection = ['Keep-Alive', 'close']
    head_accept = ['text/html, application/xhtml+xml, */*']
    head_accept_language = ['zh-CN,fr-FR;q=0.5', 'en-US,en;q=0.8,zh-Hans-CN;q=0.5,zh-Hans;q=0.3']
    head_user_agent = ['Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko',
                       'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.95 Safari/537.36',
                       'Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; rv:11.0) like Gecko)',
                       'Mozilla/5.0 (Windows; U; Windows NT 5.2) Gecko/2008070208 Firefox/3.0.1',
                       'Mozilla/5.0 (Windows; U; Windows NT 5.1) Gecko/20070309 Firefox/2.0.0.3',
                       'Mozilla/5.0 (Windows; U; Windows NT 5.1) Gecko/20070803 Firefox/1.5.0.12',
                       'Opera/9.27 (Windows NT 5.2; U; zh-cn)',
                       'Mozilla/5.0 (Macintosh; PPC Mac OS X; U; en) Opera 8.0',
                       'Opera/8.0 (Macintosh; PPC Mac OS X; U; en)',
                       'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.12) Gecko/20080219 Firefox/2.0.0.12 Navigator/9.0.0.6',
                       'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Win64; x64; Trident/4.0)',
                       'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)',
                       'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; .NET4.0E)',
                       'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Maxthon/4.0.6.2000 Chrome/26.0.1410.43 Safari/537.1 ',
                       'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; .NET4.0E; QQBrowser/7.3.9825.400)',
                       'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0 ',
                       'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.92 Safari/537.1 LBBROWSER',
                       'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; BIDUBrowser 2.x)',
                       'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.11 TaoBrowser/3.0 Safari/536.11']

    header = {
        'Connection': head_connection[0],
        'Accept': head_accept[0],
        'Accept-Language': head_accept_language[1],
        'User-Agent': head_user_agent[random.randrange(0, len(head_user_agent))],
    }

    return header


def scraperapi_url(url):
    url = url.replace(':', '%3A')
    url = url.replace('/', '%2F')
    url = url.replace('+', '%2B')
    url = url.replace(' ', '%20')
    url = url.replace('?', '%3F')
    #url = url.replace('%', '%25')
    url = url.replace('#', '%23')
    url = url.replace('&', '%26')
    url = url.replace('=', '%3D')
    scarper_url = 'http://api.scraperapi.com?key=21e40228e971e1dc070d20a2f456e82a&url=' + url + '&keep_headers=true'
    # log_info(scarper_url)
    return scarper_url

url = 'https://www.amazon.com/b/?node=11056591'
scrapy_url = scraperapi_url(url)
response = requests.request('GET', scrapy_url, timeout=300, headers=rand_header())
enconding = requests.utils.get_encodings_from_content(response.text)
html_doc = response.content.decode("utf-8")


tree = etree.HTML(html_doc)

nextPageUrl = tree.xpath('//a[@id="pagnNextLink"]/@href')

ansiList = []
ansiList_link = tree.xpath('//div[@id="mainResults"]/ul/li[starts-with(@id, "result_")]')
for link in ansiList_link:
    product_name = link.xpath('descendant::a/descendant::h2/@data-attribute')
    product_image_url = link.xpath('descendant::a/img/@src')
    product_rating = link.xpath('descendant::i/span[@class="a-icon-alt"]/text()')
    customer_review = link.xpath(
        'descendant::div[@class="a-row a-spacing-top-micro"]/a[@class="a-size-small a-link-normal a-text-normal"]/text()')
    product_price = link.xpath('descendant::a/span[@class="a-offscreen"]/text()')
    best_seller = link.xpath('descendant::div[@class="a-row sx-badge-region"]/descendant::a/@href')
    ansi_obj_dict = {"product_name": product_name,
                     "product_image_url": product_image_url,
                     "product_rating": product_rating,
                     "customer_review": customer_review,
                     "product_price": product_price,
                     "best_seller": best_seller}
    ansiList.append(ansi_obj_dict)

item = {"nodeUrl": response.url, "nextPageUrl": nextPageUrl, "ansiList": ansiList}

file = codecs.open('amazonansi.json', mode='ab+', encoding='utf-8')
line = json.dumps(item)
file.write(line.decode("unicode_escape"))

print(ansiList)


